Che: Theia Plugin Manager does not work properly with a minimal devfile

[olexii4]

Describe the bug

Theia Plugin Manager does not work properly with a minimal devfile.

Che version

• [x] latest
• [ ] nightly
• [ ] other: please specify

Steps to reproduce

1. Create a custom workspace.
   
2. Import Devfile > YAML. Create & Open from the default devfile.
   
3. Open View > Plugins and the error will be shown.
   

It is reproduced locally on single-user and multi-user CHE v7.11.0 and on https://che.openshift.io v7.10.0 .

Expected behavior

Plugins should be loaded without any errors.

Runtime

• [x] kubernetes (include output of kubectl version)
• [ ] Openshift (include output of oc version)
• [ ] minikube (include output of minikube version and kubectl version)
• [ ] minishift (include output of minishift version and oc version)
• [ ] docker-desktop + K8S (include output of docker version and kubectl version)
• [ ] other: (please specify)

Screenshots

Installation method

• [x] chectl
• [ ] che-operator
• [ ] minishift-addon
• [ ] I don't know

Environment

• [ ] my computer
  
  
  
  • [ ] Windows
  
  
  • [x] Linux
  
  
  • [ ] macOS
  
  
• [ ] Cloud
  
  
  
  • [ ] Amazon
  
  
  • [ ] Azure
  
  
  • [ ] GCE
  
  
  • [ ] other (please specify)
  
  
• [ ] other: please specify

[vitaliy-guliy]

It seems I faced this problem earlier and investigated the code a bit. The reason could be that Plugin service (Che-Theia extension) tries to read the components, which is empty.
It should be one-line fix.